Patents by Inventor Masayuki Nogi
Masayuki Nogi has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11664737Abstract: According to the present embodiment, a DC transformation system includes a rectifier, a first power conversion device, a second power conversion device, and a control device. The rectifier rectifies AC power supplied from an AC power source and outputs a first DC voltage. The first power conversion device is connected in series to the rectifier and outputs a second DC voltage. The second power conversion device is connected in parallel to the rectifier and converts power supplied from the rectifier to supply the converted power to the first power conversion device. The control device controls the first power conversion device to cause an addition/subtraction voltage of the first DC voltage and the second DC voltage to be a predetermined voltage.Type: GrantFiled: November 9, 2020Date of Patent: May 30, 2023Assignees: KABUSHIKI KAISHA TOSHIBA, TOSHIBA INFRASTRUCTURE SYSTEMS & SOLUTIONS CORPORATIONInventors: Koji Maki, Masayuki Nogi
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Publication number: 20210058004Abstract: According to the present embodiment, a DC transformation system includes a rectifier, a first power conversion device, a second power conversion device, and a control device. The rectifier rectifies AC power supplied from an AC power source and outputs a first DC voltage. The first power conversion device is connected in series to the rectifier and outputs a second DC voltage. The second power conversion device is connected in parallel to the rectifier and converts power supplied from the rectifier to supply the converted power to the first power conversion device. The control device controls the first power conversion device to cause an addition/subtraction voltage of the first DC voltage and the second DC voltage to be a predetermined voltage.Type: ApplicationFiled: November 9, 2020Publication date: February 25, 2021Applicants: KABUSHIKI KAISHA TOSHIBA, TOSHIBA INFRASTRUCTURE SYSTEMS & SOLUTIONS CORPORATIONInventors: Koji MAKI, Masayuki NOGI
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Patent number: 10027242Abstract: A vehicle power conversion device includes a two-level converter, a three-level converter and one cooling device. The two-level converter includes a capacitor, first switching devices and second switching devices. The three-level converter includes two capacitors, third switching devices, fourth switching devices and a bidirectional switch. The first and second switching devices are embedded in first power modules, and the third and fourth switching devices are embedded in second power modules. The second power modules have dielectric strength voltages at least equal to a voltage applicable to any one of the two capacitors connected in series included in the three-level converter, and the first power modules have dielectric strength voltages at least equal to a sum of a voltage applicable to any one of the two capacitors connected in series included in the three-level converter and a voltage applicable to the capacitor included in the two-level converter.Type: GrantFiled: July 31, 2014Date of Patent: July 17, 2018Assignee: KABUSHIKI KAISHA TOSHIBAInventors: Yuusuke Kouno, Masayuki Nogi, Nobumitsu Tada, Yuuki Tsukinari, Yosuke Nakazawa, Tomoyuki Makino
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Patent number: 9873335Abstract: An electric railcar power feeding system in an embodiment includes a power storage device, a rectifier, and an emergency power supply. The power storage device is connected to a feeder line for an electric railcar. The rectifier converts alternating-current power of a first power system to direct-current power and supply the direct-current power for the feeder line. The emergency power supply supplies power of a second power system different from the first power system for the feeder line.Type: GrantFiled: August 5, 2014Date of Patent: January 23, 2018Assignee: KABUSHIKI KAISHA TOSHIBAInventors: Masayuki Nogi, Nobuhiko Satake
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Patent number: 9764649Abstract: According to an embodiment, a power management apparatus is provided with storage means, discharge plan creation means, discharge instruction means. The storage means stores a discharge amount of a power storage device to a distribution system, correspondingly to a prescribed parameter. The discharge plan creation means, when storable regenerative power is generated, creates a discharge plan to determine a discharge amount of the power storage device, from past data stored in the storage means, of regenerative power amount of a train and the discharge amount of the power storage device to the distribution system. The discharge instruction means outputs a discharge instruction to the power storage device.Type: GrantFiled: August 29, 2014Date of Patent: September 19, 2017Assignee: Kabushiki Kaisha ToshibaInventors: Yumi Hanashima, Miyako Miyoshi, Tatsuhiro Yamaguchi, Koji Otsuji, Kenichi Tanomura, Masayuki Nogi, Jin Kato
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Publication number: 20170170744Abstract: A vehicle power conversion device includes a two-level converter, a three-level converter and one cooling device. The two-level converter includes a capacitor, first switching devices and second switching devices. The three-level converter includes two capacitors, third switching devices, fourth switching devices and a bidirectional switch. The first and second switching devices are embedded in first power modules, and the third and fourth switching devices are embedded in second power modules. The second power modules have dielectric strength voltages at least equal to a voltage applicable to any one of the two capacitors connected in series included in the three-level converter, and the first power modules have dielectric strength voltages at least equal to a sum of a voltage applicable to any one of the two capacitors connected in series included in the three-level converter and a voltage applicable to the capacitor included in the two-level converter.Type: ApplicationFiled: July 31, 2014Publication date: June 15, 2017Applicant: KABUSHIKI KAISHA TOSHIBAInventors: Yuusuke KOUNO, Masayuki NOGI, Nobumitsu TADA, Yuuki TSUKINARI, Yosuke NAKAZAWA, Tomoyuki MAKINO
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Patent number: 9616770Abstract: An embodiment of an electric vehicle drive apparatus includes a rotary electric motor, an electromagnet apparatus, an electric motor controller, and an electromagnet controller. The rotary electric motor drives at least one wheel. The electromagnet controller generates at least one of an attraction force between a rail and a bogie, and a propulsion force. The electromagnet controller controls the electromagnet apparatus. The rotary electric motor and the electromagnet apparatus are provided on the same bogie.Type: GrantFiled: March 25, 2016Date of Patent: April 11, 2017Assignee: KABUSHIKI KAISHA TOSHIBAInventors: Masayuki Nogi, Shun Taniguchi, Yosuke Nakazawa, Jin Kato
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Publication number: 20160207421Abstract: An embodiment of an electric vehicle drive apparatus includes a rotary electric motor, an electromagnet apparatus, an electric motor controller, and an electromagnet controller. The rotary electric motor drives at least one wheel. The electromagnet controller generates at least one of an attraction force between a rail and a bogie, and a propulsion force. The electromagnet controller controls the electromagnet apparatus. The rotary electric motor and the electromagnet apparatus are provided on the same bogie.Type: ApplicationFiled: March 25, 2016Publication date: July 21, 2016Applicant: KABUSHIKI KAISHA TOSHIBAInventors: Masayuki NOGI, Shun TANIGUCHI, Yosuke NAKAZAWA, Jin KATO
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Patent number: 9312717Abstract: Frequent charging/discharging to an electric energy storage element is suppressed for energy saving and longer lifetime. A transmission-line-side power converter device converts power from a transmission line, and supplies DC power to a feeder line connected to an electric energy storage element. An output current controller connected with a line voltage detector detects the feeder line voltage, and a charging rate detector detects a charging rate of the electric energy storage element. A control table sets charging/discharging start voltages and current saturated voltages based on the detected line voltage and charging rate. The output current controller controls the electric energy storage element to discharge at a high line voltage as the charging rate increase, to suppress charging the electric energy storage element at the low line voltage, and makes discharging difficult at the low line voltage to facilitate charging at the low line voltage as the charging rate decreases.Type: GrantFiled: February 14, 2012Date of Patent: April 12, 2016Assignee: Kabushiki Kaisha ToshibaInventors: Masayuki Nogi, Ryo Takagi, Koji Ootsuji, Mitsuhiko Matsui, Satoshi Koizumi
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Patent number: 9083194Abstract: A battery charging system includes a first battery unit for storing electric power to be supplied to a driving system of a train, and a second battery unit for storing electric power to be supplied to the first battery unit. A control unit calculates electric power consumption from the first battery unit. And a battery charging unit supplies electric power to the first battery unit from the second battery unit based on the electric power consumption calculated by the control unit.Type: GrantFiled: August 30, 2012Date of Patent: July 14, 2015Assignee: KABUSHIKI KAISHA TOSHIBAInventors: Takeru Koga, Masayuki Nogi, Hirotoshi Kawai, Satoshi Koizumi
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Publication number: 20150076903Abstract: According to one embodiment, a controlling apparatus includes a power phase controlling unit to control the phase of the power to be output to the power line by the power converting apparatus, based on the synchronous signal, and when a disruption of the synchronous signal is detected, control the phase of the power to be output to the power line by the power converting apparatus, based on the synchronous signal received before the disruption. The controlling apparatus includes a communication controlling unit to control the communicating unit such that, for information to determine a master that sends the synchronous signal, the communicating unit performs either one of a receiving from the controlling apparatus for the other power converting apparatus and a sending to the controlling apparatus for the other power converting apparatus, while the power phase controlling unit performs the control based on the synchronous signal received before the disruption.Type: ApplicationFiled: September 15, 2014Publication date: March 19, 2015Inventors: Fumiaki Kanayama, Yuusuke Kouno, Masayuki Nogi, Yasuyuki Nishibayashi, Ikuya Aoyama
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Publication number: 20150045997Abstract: An electric railcar power feeding system in an embodiment includes a power storage device, a rectifier, and an emergency power supply. The power storage device is connected to a feeder line for an electric railcar. The rectifier converts alternating-current power of a first power system to direct-current power and supply the direct-current power for the feeder line. The emergency power supply supplies power of a second power system different from the first power system for the feeder line.Type: ApplicationFiled: August 5, 2014Publication date: February 12, 2015Applicant: Kabushiki Kaisha ToshibaInventors: Masayuki NOGI, Nobuhiko SATAKE
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Publication number: 20140368154Abstract: According to an embodiment, a power management apparatus is provided with storage means, discharge plan creation means, discharge instruction means. The storage means stores a discharge amount of a power storage device to a distribution system, correspondingly to a prescribed parameter. The discharge plan creation means, when storable regenerative power is generated, creates a discharge plan to determine a discharge amount of the power storage device, from past data stored in the storage means, of regenerative power amount of a train and the discharge amount of the power storage device to the distribution system. The discharge instruction means outputs a discharge instruction to the power storage device.Type: ApplicationFiled: August 29, 2014Publication date: December 18, 2014Applicant: Kabushiki Kaisha ToshibaInventors: Yumi HANASHIMA, Miyako Miyoshi, Tatsuhiro Yamaguchi, Koji Otsuji, Kenichi Tanomura, Masayuki Nogi, Jin Kato
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Patent number: 8836161Abstract: A breaker 162 is opened when a pantograph 101 is lowered. The pantograph 101 is connected to an overhead wire 200. Voltage and its phase of the overhead wire are detected by a detector 161. Power is supplied from a power storage device 150c to a tertiary winding 112c via a power converter 14c such that a primary side of the main transformer 110 has the same voltage and phase as the overhead wire so as to reversely excite the main transformer 110. When the voltage of the main transformer 110 has the same phase as the voltage of the overhead wire 200, the breaker 162 is turned on and then the pantograph 101 is raised, to connect the overhead wire 200 and the main transformer 110 to each other, thereby preventing the occurrence of an excitation inrush current to the main transformer 110.Type: GrantFiled: March 12, 2010Date of Patent: September 16, 2014Assignee: Kabushiki Kaisha ToshibaInventors: Masayuki Nogi, Katsuhisa Inagaki, Kazuaki Yuuki, Yosuke Nakazawa, Satoshi Koizumi
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Publication number: 20140070770Abstract: Frequent charging/discharging to an electric energy storage element is suppressed for energy saving and longer lifetime. A transmission-line-side power converter device converts power from a transmission line, and supplies DC power to a feeder line connected to an electric energy storage element. An output current controller connected with a line voltage detector detects the feeder line voltage, and a charging rate detector detects a charging rate of the electric energy storage element. A control table sets charging/discharging start voltages and current saturated voltages based on the detected line voltage and charging rate. The output current controller controls the electric energy storage element to discharge at a high line voltage as the charging rate increase, to suppress charging the electric energy storage element at the low line voltage, and makes discharging difficult at the low line voltage to facilitate charging at the low line voltage as the charging rate decreases.Type: ApplicationFiled: February 14, 2012Publication date: March 13, 2014Applicant: Kabushiki Kaisha ToshibaInventors: Masayuki Nogi, Ryo Takagi, Koji Ootsuji, Mitsuhiko Matsui, Satoshi Koizumi
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Patent number: 8543275Abstract: A control device for an electric motor car comprising: a switch which is installed between a power supply source and a power line drawn through the electric motor car; a battery which supplies power to a main motor of the electric motor car; a step-up unit, which is installed between the power line and the battery, configured to increase a voltage; and a control unit which breaks a connection between the power supply source and the power line using the switch when braking the electric motor car, increases the power supplied from the battery using the step-up unit, and performs regenerative braking in the main motor to which the increased power is supplied.Type: GrantFiled: July 30, 2012Date of Patent: September 24, 2013Assignee: Kabushiki Kaisha ToshibaInventors: Takeru Koga, Masayuki Nogi, Hirotoshi Kawai, Satoshi Koizumi
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Publication number: 20130245868Abstract: A control device for an electric motor car comprising: a switch which is installed between a power supply source and a power line drawn through the electric motor car; a battery which supplies power to a main motor of the electric motor car; a step-up unit, which is installed between the power line and the battery, configured to increase a voltage; and a control unit which breaks a connection between the power supply source and the power line using the switch when braking the electric motor car, increases the power supplied from the battery using the step-up unit, and performs regenerative braking in the main motor to which the increased power is supplied.Type: ApplicationFiled: July 30, 2012Publication date: September 19, 2013Applicant: KABUSHIKI KAISHA TOSHIBAInventors: Takeru KOGA, Masayuki Nogi, Hirotoshi Kawai, Satoshi Koizumi
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Publication number: 20130049458Abstract: A battery charging system includes a first battery unit for storing electric power to be supplied to a driving system of a train, and a second battery unit for storing electric power to be supplied to the first battery unit. A control unit calculates electric power consumption from the first battery unit. And a battery charging unit supplies electric power to the first battery unit from the second battery unit based on the electric power consumption calculated by the control unit.Type: ApplicationFiled: August 30, 2012Publication date: February 28, 2013Applicant: KABUSHIKI KAISHA TOSHIBAInventors: Takeru KOGA, Masayuki NOGI, Hirotoshi KAWAI, Satoshi KOIZUMI
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Publication number: 20120000739Abstract: A breaker 162 is opened when a pantograph 101 is lowered. The pantograph 101 is connected to an overhead wire 200. Voltage and its phase of the overhead wire are detected by a detector 161. Power is supplied from a power storage device 150c to a tertiary winding 112c via a power converter 14c such that a primary side of the main transformer 110 has the same voltage and phase as the overhead wire so as to reversely excite the main transformer 110. When the voltage of the main transformer 110 has the same phase as the voltage of the overhead wire 200, the breaker 162 is turned on and then the pantograph 101 is raised, to connect the overhead wire 200 and the main transformer 110 to each other, thereby preventing the occurrence of an excitation inrush current to the main transformer 110.Type: ApplicationFiled: March 12, 2010Publication date: January 5, 2012Applicant: Kabushiki Kaisha ToshibaInventors: Masayuki Nogi, Katsuhisa Inagaki, Kazuaki Yuuki, Yosuke Nakazawa, Satoshi Koizumi